Fw190A5. Speed?

[RAM]

THis is a question about (yes you guessed it   fw190A5).

Fw190A8 had no MW50 boost. It had GM1...but it also had a Manual override over the Kommandogėrat that allowed the pilot to keep WEP on for periods up to 10 minutes.

AFAIK Fw190A5 had NO manual override. Am I wrong?. If I'm not wrong and Fw190A5's WEP is only available for 5 minutes that means it will be slower in the deck? how much slower?...

So two questions in one. How many WEP time is available in Fw190A5?...and what will be its deck speed compared with 190A8?

thanks

[This message has been edited by RAM (edited 06-13-2000).]

[Saintaw]

Could actualy someone post here all available wep times of ALL the airplanes we have ?

Thank you, I'd be gratefull !

[RAM]

AFAIK in all me109s and Fw190A8 WEP time is 10 minutes.

In all the rest is something near 5 minutes.

[funked]

I have no German data for A-5.  Speed performance should be very close to A-3 and A-4.

USAAF tested a G-3 with the stores carriers removed - same airframe and engine as A-5:  http://members.xoom.com/mikewaltz/p75.jpg

USN tested an A-5:  http://www.raf303.org/funked/page3.htm

Those are pretty close to each other and pretty close to German figures for A-3 and A-4.

[-ammo-]

Actually I believe that the P-47 had a very good WEP, read it somewhere.

[Lephturn]

The P47 had a very good supercharger, hence the great WEP.

I know back in my brand W days, the key to kicking bellybutton in the Jug was always WEP.  If you run out of WEP in a Jug and you haven't killed them all or run away yet, you are in serious trouble.  

On the plus side, WEP on the jug can be used to surprise the crap out of those that under-estimate it.  That's one of the reasons I love the big beast so much.  

------------------
Lephturn - Chief Trainer
A member of The Flying Pigs
Visit Lephturn's Aerodrome for AH news, resources, and training data.
 http://users.andara.com/~sconrad/


"MY P-47 is a pretty good ship
And she took a round coming 'cross the Channel last trip
I was thinking 'bout my baby and lettin' her rip
Always got me through so far
Well they can ship me all over this great big world
But I'll never find nothing like my North End girl
I'm taking her home with me one day, sir
Soon as we win this war"
 - Steve Earl

[-ammo-]

We ought to start a lobby for the Beast! Your the president Lephturn I am just a loud voice.

[juzz]

Here's why the P-47D had good "WEP".

 

All early Thunderbolts used the R-2800-21 engine. Water injection capability was added to this engine beginning with the D-4-RA and D-5-RE production blocks. Provision was made for the mounting of 15-gallon tank carrying a water-alcohol mixture to the bulkhead just aft of the engine. A line from this tank was plumbed directly into the fuel intake. When injected into the combustion chamber, the water checked a dangerous rise in cylinder head temperature while manifold pressure was boosted. For brief instants, a 15-percent increase in engine power could be obtained, giving a maximum war emergency power of 2300 hp. In the D-5-RE, D-6-RE, and D-10-RE (D-4-RA, production bolcks, the pilot manually controlled the water flow of the injector, but the injection procedure was automatically- controlled on the D-11-RE (D-11-RA) and subsequent blocks. This happened when the throttle was pushed forward into its last half-inch of travel.

J.Baugher's P-47 History

[SFRT - Frenchy]

All I know is that the P47 had a light, when it was getting hot, the light was blinking, when it was critical the light was steady. All the pilot had to do is to lower hte manifold pressure to keep the light blinking.

[Jochen]

 

Fw190A8 had no MW50 boost. It had GM1...but it also had a Manual override over the Kommandogėrat that allowed the pilot to keep WEP on for periods up to 10 minutes.

I don't think many A-8's had GM 1. Funked's data shows speeds with GM 1 but I haven't read too many accounts of A-8's actually having GM 1.

 

AFAIK Fw190A5 had NO manual override. Am I wrong?. If I'm not wrong and Fw190A5's WEP is only available for 5 minutes that means it will be slower in the deck? how much slower?...

So two questions in one. How many WEP time is available in Fw190A5?...and what will be its deck speed compared with 190A8?

F-8 had same engine as A-8 and it is said that F-9 had additional fuel injection to supercharger inlet to allow temporary power increase below 1 km. It was kind of poor man's MW 50. I would think that A-8 also had this modification.

This could mean that A-8 might have better top speed below 1 km than A-5. This is just a theory, someon should look actual performance figures.

------------------
jochen Jagdflieger JG 2 'Richthofen' Aces High
jochen Geschwaderkommodore (on leave) Jagdgeschwader 2 'Richthofen'  Warbirds

Thanks for the Fw 190A-5 HTC!

Ladysmith wants you forthwith to come to her relief
Burn your briefs you leave for France tonight
Carefully cut the straps of the booby-traps and set the captives free
But don't shoot 'til you see her big blue eyes

[funked]

Jochen, RAE tested an Fw 190A-4 with some sort of WEP system.  They estimated power at 1970 hp and it went 355 mph on the deck.  This was in the files Weretiger dug up.  I'm guessing it was the petrol injection or the boost override.

[juzz]

Gatt/Funked's Fw 190A-8 manual shows 350mph at S/L(with the increased boost). The USAAF Fw 190G-3 chart shows 340mph at S/L.

Afaik the RAE had three examples of the Fw 190A-4; all captured between April and June 1943. Unless the increased boost was around before then, I would guess that the one they tested at 355mph had the extra fuel injector in the supercharger.

[funked]

Keep in mind that with MW 50 and the supplemental fuel injection system, the increased boost pressure is what gives the power.  The injection of fuel or water-methanol solution just makes the boost increase possible.

[RAM]

So, in short, A5 is as fast as A8 isnt it?

[juzz]

Judging from those charts, the A-5 should be faster from about 1km and up.